Relationship between BMI and all-cause mortality in patients with hypertension remains controversial. This study aimed to evaluate the time-varying association between BMI in patients with

hypertension and all-cause mortality.

This population-based cohort study included 212,394 Chinese adults with hypertension from 2007 to 2015 and was followed up until death, loss-to-follow-up, or December 31, 2018. According to

the World Health Organization criteria for Asians, BMI was categorized into five groups: underweight (BMI